Belt buckle



FIG. 1 is a top plan view of the belt buckle embodying my new design, the bottom plan view being a mirror image;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side view thereof, the right-side view being similar; and

FIG. 5 is a fragmentary front elevation showing the belt buckle in open condition. 

The ornamental design for a belt buckle, as shown and described. 